In 1950, a country had a total fertility rate of 5.9. In 2010, the total fertility rate of the country was 2.3. Which of the following is most likely the reason for the change in total fertility rate?
A.Women had increased educational opportunities and had children later in life.
B.Families had limited access to family planning and contraceptives.
C.There were lower infant mortality rates as a result of increased access to healthcare.
D. The country shifted to a more agricultural-based economy and the need for child labor decreased.